The codex contains motets, Mass movements, and a handful of virelais, chaces, and ballade, composed in the middle of the 14th century. The notation is characteristic of the Ars Nova period. The manuscript is missing at least one gathering of Mass movements.Kügle, Karl, "Codex Ivrea, Bibl. cap. 115: A French Source 'Made in Italy'," Revista de Musicologia 13 (1990), p. 529.

The provenance of the codex is disputed. It was long thought to have been compiled in Avignon, the seat of the French Papacy around 1370.Heinrich Besseler, "Studien zur Musik des Mittelalters, Part I: Neue Quellen des 14. und beginnenden 15. Jahrhunderts," Archiv für Musikwissenschaft 7 (1925), p. 194.Ursula Günther, "Problems of Dating in ars nova and ars subtilior," L'ars nova italiana del Trecento 4 (Certaldo: 1978), pp. 292-293. Most recently, however,Karl Kügle has asserted that the source was made in Ivrea itself, by musicians connected to the Savoyard court (possibly Jehan Pellicier), in the 1380s or 1390s.Kügle, op. cit., pp....Read More